{"id":"CVE-2026-97963","published":"2026-09-25T11:17:24.080","lastModified":"2026-09-25T11:17:24.080","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: stmmac: initialize ptp_lock at probe time\n\npriv->ptp_lock is only initialized in stmmac_ptp_register(), which runs\nduring __stmmac_open(). However, the lock is also used while the\ninterface is down and has never been opened: tc_taprio_configure()\ninvokes the PTP gettime64() callback to compute the EST base time when\noffloading a TAPRIO schedule, and stmmac_get_time() takes\npriv->ptp_lock. Using an uninitialized rwlock is undefined behaviour.\nMove the rwlock_init() to __stmmac_dvr_probe(), together with the other\nprivate locks, so that ptp_lock is always valid regardless of the\ninterface state.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/0338c68e22abd2ee509ec2e32508a50896618c32","tags":[]},{"url":"https://git.kernel.org/stable/c/25cc0096efba83b4e0e6fa50f03e9543b41e9d3d","tags":[]},{"url":"https://git.kernel.org/stable/c/420315413b29635de1d4ea4142e410e6465260f3","tags":[]},{"url":"https://git.kernel.org/stable/c/b1986595cf827c38ff929e22fbc9ca8f76379306","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}